The processes you used to determine the direction of
wind over Oahu work for other areas with mountains as
well. Examine the topography of the Sierra Nevada Mountains
east of California's central valley on the shaded relief
map below. (North is up.)

! Click the buttons to show average annual precipitation
levels for various locations in California and western
Nevada.

Map: USGS; Data: National
Weather Service

11. Drawing on what you learned from the
case of Oahu, in what direction do you predict the wind
blows over California? Describe the evidence you used
to make your prediction.